| Budget Amount *help |
¥16,510,000 (Direct Cost: ¥12,700,000、Indirect Cost: ¥3,810,000)
Fiscal Year 2017: ¥4,550,000 (Direct Cost: ¥3,500,000、Indirect Cost: ¥1,050,000)
Fiscal Year 2016: ¥4,420,000 (Direct Cost: ¥3,400,000、Indirect Cost: ¥1,020,000)
Fiscal Year 2015: ¥7,540,000 (Direct Cost: ¥5,800,000、Indirect Cost: ¥1,740,000)
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| Outline of Final Research Achievements |
Utilizing meta-material structures operating in microwave to THz-wave ranges, new high-speed optical modulation devices for converting wireless signals to optical signals are analyzed, designed and fabricated. For the fabrication of the designed device, z-cut LiNbO3 was used as a substrate. The optical waveguides, metal patterns and three-dimensional structures were fabricated by use of the annealed-proton-exchange method, the lift-off technique with vapor film depositions, and substrate bonding with a UV adhesive, respectively.
The fabricated modulation devices were tested by use of a laser beam with a 1550-nm wavelength and wireless signals. As a result, clear optical modulation sidebands were observed and the basic performances were verified successfully.
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